Portable pneumatic shuttle-threading implement.



1 A. RIGGI; PORTABLE PNEUMATIC SHUTTLE THREADING IMPLEMENT.

APPLIOATION FILED 1116.11.41, 1910. 984,606. Patented Feb. 21, 1911.

smu i ai m FIE'I-l 1 TH; N'IRRIS PETERS cm, wasumcron, n. c

unrrn ANGELO'RICGI, OF NATICK, RHODE ISLAND.

PORTABLE PNEUMATIC SHUTTLE-THREADING IMPLEMENT.

Specification of Letters Patent.

Patented Feb. 21, 1911.

Application filed March 4, 1910. Serial No. 547,182.

To all whom it may concern.

Be it known that I, ANGELO R1001, a subject of the King of Italy,residing at Natick, in the county of Kent and State of Rhode Island,have invented certain new and use ful Improvements in Portable PneumaticShuttle-Threading Implements, of which the following is a specification.

My invention relates to portable pneumatic loom-shuttle-threaders, andit consists in the novel features of construction hereinafter set forthand claimed.

The object I have in view is to produce a portable pneumaticshuttle-threading implement possessing a greater degree of efficiencythan other articles of this class as heretofore devised. The instrumentforming the subject of this invention is simple in construction,positive in action, not liable to become inoperative, is adapted to bereadily taken apart for inspection or repair, is relatively small insize, and comparatively inexpensive to manufacture.

I11 the accompanying sheet of drawings, Figure 1 represents a front sideelevation of my improved pneumatic shuttle-threading implement, showinga shuttle normally positioned thereon preparatory to the threadingoperation. Fig. 2 is a corresponding vertical sectional view, takensubstantially through the line 2 2 of Fig. 1. Fig. 3 is a horizontalsectional View, taken on line 3 3 of Fig. 2, the shuttle being omitted;and Fig. 4 is an enlarged, detached, vertical sectional view takenthrough the center of the chambered shuttle-supporting head.

The following is a more detailed description of my improved portablepneumatic shuttle-threading implement A: As represented, the generalform of the sheet-metal casing a cross-sectionally is substantiallytriangular and having well rounded corners or edges, as shown in Fig. 3.It is provided with removable cupped top and bottom closure members orends 03, secured in position by screws 0 or by other means. The backside wall a of the casing or shell has one or more depending fixed hooksh whereby the device may be readily attached to a belt or strap or othersuitable means worn,

by the weaver for holding and supporting the device. Within the casing ais mounted the inverted cylinder or air-exhausting member .B, having topand bottom heads 6, 6 respectively, removably secured thereto. Thecylinder is positioned near the top of the casing and secured in placeby means of bolts passing through the latters rear wall and into laterallugs or feet f integral with the cylinder. The upper head I) has acentral nozzle 6 open to the chamber above the piston 79. The latter hasa rod 1" secured thereto, the same extending downward through the lowerhead 6 and being secured to a bent stiff connection 2', in turn securedto the cross-head or block a, vertically slid-,

able in the longitudinally slotted opening a formed in the front side ofthe casing. The piston-rod passes through a suitable combined guide andpacking-box p of the bottom head. If desired, the upper head may beprovided with depending inner lugs 8, adapted to serve as stops forlimiting the upward stroke of the piston, all as clearly represented inFig. 2. The cross-head c is provided with an outer or front arm 0adapted to carry the said shuttle-supporting hollow head N; the lowerstem 72 of the latter passing through the arm. As thus constructed, itis clear that upon pressing the cross-head c downward to its limit orbottom of the slot (1. (see dotted line position indicated in Fig. 2),resisted by the helically wound spring 9, the several members, 10, r,and 2', will be correspondingly depressed. Upon removing the pressure,the said spring automatically returns the parts to the normal stationaryposition, shown by the full lines. The said chambered head Nmay have anysuitable form; the drawings represent it as being spherical. It consistsof the upper and lower hemispherical members a, 41 adapted to bedetachably secured together, and having a perforated, horizontal innerpartition or screen 70 clamped between them, as shown most clearly inFig. 4. The upper member a is provided with a small central inlet-nozzleof, protected by an open rubber tip a"; constructed to register with thethread-tube or eye 202 of the shuttle, and when in use serving as apacking to prevent leakage of air around its exterior. The lower half,17, of the sphere has a small lateral outlet-nozzle n in opencommunication with the lower part of the chamber. To this nozzle isattached one end of a flexible tube t, the other end after passingthrough the opening a of the casing a and above the cross-head, beingattached to the upper nozzle Zr of the cylinder-head, thus forming anair-tight connection between the latter and the intake-nozzle a Ifdesired,

a guide or eye g may be employed for holding the tube in position, asrepresented in Fig. 8.

Shuttles, S, as usually made, are provided each with a swinging spindleon which the thread or yarn-cop is mounted. livery or free end of thethread leading from the cop is threaded through a guide-slot w, atransverse central porcelain eye. 10 located contiguous to the bottom ofthe slot and the thread-tube or eye proper e0 disposed at an angle toand communicating with the eye 10 and extending through the wall of theshuttle, all as indicated in Fig. 2.

The following is a description of the manner of operation of my improvedportable pneumatic shuttle-threading instrument A: It is to be borne inmind that the device is conveniently attached, say to a belt worn by theweaver, thus leaving both hands free. The weaver first places the cop inthe shuttle and positions the loose or free end portion of the threadcontiguous to the shuttle-eye, in exactly the same manner as though thethread were to be sucked through the shuttle-eye by the weavers mouth.The shuttle, while still held in the weavers hand is next positionedupon and partly supported by the valvele-ss implement A, the upper endof the air inlet-nozzle a, or then snugly registering and alining withthe eye portion w of the shuttle. See also Fig. 2. N ow, upon quicklypressing the shuttle downwardly to its limit, or dotted line position,the element N, cross-head, piston, and flexible rubber connection 6 willproduce a partial vacuum in the upper portion of the cylinder B, the

result being to suck the free end portion of the thread, as indicated byarrow as in Fig. 2, downward through the shuttle-eye and into the nozzle12 the now threaded shuttle is then removed, thus completing theoperation. The spring 9 immediately thereafter automatically returns theseveral movable members of the device back again to the original ornormal position. Open holes 6 formed in the bottom head 6 readily permitthe flow of atmospheric air into and out of the chambered portion belowthe piston. It may be added that the end of the thread then extendingthrough the shuttle-eye may be readily drawn out longer, if desired, andthe shuttle inserted between the shedded warp-threads of the loom, asusual. It may be observed, too, that the presence ofthe screen 70 in theelement N serves to prevent the entrance of lint and foreign matter intothe air-tube 25, thereby guarding the latter against clogging. In caseof an accumulation of lint, &c., in the chamber portion a, the same canbe readily removed by simply unscrewing the two members of the shell. Ido not desire to limit my invention to the The deexact construction andarrangement of the several parts as represented in the drawings, sinceslight'changes or modifications may be made therein Without affectingits efliciency and scope.

hat I claim as my invention and desire to secure by United StatesLetters'Patent 1s:

1. As an improved article of manufacture, a portable, pneumaticloom-shuttle-thread ing implement, the same including in itsconstruction a casing, an air-exhaust cylinder mounted therein, providedwith an airinlet opening, a spring-retracted piston and rod movablyfitted in the cylinder, a guided cross-head or member secured to thepistonrod, whereby they are adapted to 'move bodily in unison, achambered member disposed exterior of the casing and carried by thecross-head, provided with air intake and outlet-nozzles, and a tubularconnection uniting the outlet nozzle and said air-inlet opening of thecylinder; the intake-nozzle of said chambered element being adapted toengage the threading-eye of a shuttle, for the purpose herein set forth.

2. In a shuttle-threading implement of the character described, providedwith. a suit ably mounted air-exhaust or vacuum cylinder. apiston andpiston-rod movably mounted in the cylinder, and a vertically movablecross-head connected indirectly to said rod, the combination therewithof a movable chambered element N, secured to said crosshead having airintake and outlet-nozzles, a screen disposed in the chamber of saidelement for protecting its outlet passage, and a tubular elementconnecting said outlet nozzle and vacuum cylinder, for the purpose setforth.

3. In a slnittle-threading implement of the character described,provided with a casing member having a longitudinally slotted opening,and an air-exhausting cyl-i inder mounted in the casing, the combinationtherewith of a spring-retracted piston and its rod, adapted for movementin the cylinder, a movable crosshead or block member mounted in andguided by said,

slotted portion, rigid connecting means secured to the piston-rod andcross-head, an air-intake element carried by the cross-head, adapted toengage the threading-eye of a shuttle, and a flexible tube connectingsaid

